作者:Qingqi Chen、David A. Lightner
DOI:10.1021/jo972227r
日期:1998.4.1
and found to engage in intramolecular hydrogen bonding. Like bilirubin, the propionic acid carboxyl group of hemirubin is linked to the opposing dipyrrinone by intramolecular hydrogen bonds, and thus, 1 shares in some of the solution properties of its parent bilirubin, e.g., an acid that is less polar than its methyl ester.
一半胆红素的模型,这是一种黄疸的神经毒性黄橙色色素,9- [2-(2-羧乙基)苄基] -2,3,7,8-四甲基-1,10-二氢联吡啶(1,半柔红素) SnCl(4)催化在2,3,7,8-1-oxo-1,10-dihydrodipyrrin(7)的C(9)上用邻-(氯羰基)氢肉桂酸甲酯合成了Friedel-Crafts酰化反应。与较早的胆红素模型化合物不同,半红素被预测并发现参与分子内氢键。像胆红素一样,半红素的丙酸羧基通过分子内氢键与相对的二吡啶酮相连,因此,在其母体胆红素的某些溶液性质中有1股,例如极性比其甲酯低的酸。